JPS61215751A - Needle bar of warp knitting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is characterized in that the needle shaft is bent, the base of the needle shaft is attached to the needle bar by a groove and a stopper, and the bent part of the needle shaft is attached to the corresponding needle. The present invention relates to a needle bar for a warp knitting machine having needles supported on a seat of the bar.

[Prior art] The above-mentioned needle bar is disclosed in West German Patent Publication No. 1.
It is known from No. 287248. The needle bar has a sloped surface that closely contacts the needle shaft on the side surface and extends obliquely to support the bending section. This is because the axial thrust acting on the needle, that is, the thrust acting substantially in the direction of the needle axis, tends to cause the needle to slide along its slope, which impairs the tightness between the needle and the needle bar. This may cause the problem to occur.

Furthermore, in order to improve precision, the angle must be held accurately in order to be regulated by a diagonally extending surface such as the slope of a needle bar, but there is a problem in that it is not always easy to maintain the angle accurately. there were. In the case of a longitudinal machine, the accuracy required is extremely high, and all needle heads must be aligned with high precision in the longitudinal direction of the needle par. Since the refraction at the transition position from the bending part of the needle shaft to the base of the needle shaft directly affects the height of the needle head by the slope, if the precision of the slope is low, the length of the needle amount will vary. In this case, the alignment and fixation of the needles can be done in two ways. One is to attach the base of the needle shaft to the needle bar via a groove and a stopper, and the other is to attach the bending part to the slit of the needle bar.
There is no lateral guidance of the base of the needle shaft; thus, the longitudinal alignment of the needle, i.e. the perpendicularity of the longitudinal axis of the needle to the needle bar, is limited by the relatively short section of the refract with the slit. However, it is not possible to improve the alignment accuracy of the needles by using slits.

In addition, the needle bar with a needle is described in West German Patent Publication No. 2655.
No. 269, the needle has an inclined bend, but the bend is unsupported. The base of the needle shaft is completely attached to the slit of the needle bar,
There was also the problem that the needle had to be positioned separately via a groove and a stop into which the base of the needle shaft entered.

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned problems, and its purpose is to solve the problem even if axial thrust is applied to the needle during movement of the needle bar. The object of the present invention is to provide a needle bar and a needle formed in such a shape that displacement of the needle is prevented.

[Means for Solving the Problem] In order to achieve the above object, the features of the present invention are as follows:
The bent portion of the needle is provided with a surface extending substantially perpendicularly to the direction of movement of the needle, and the surface is seated on the seat of the needle bar. Note that the base of the needle shaft is attached to the groove of the needle bar in the same manner as before.

[Function] The seating surface provided on the bent portion of the needle is seated on a seat extending substantially perpendicular to the direction of movement of the needle, and the axial thrust is substantially perpendicular to the seating surface, so the thrust is The needle is received by the catch without causing any component in the direction of shifting the needle. Moreover, since the needle bar only needs to be formed with its front surface perpendicular to the seat, the needle bar is easy to manufacture.

For a needle bar with a needle shaft that bends obliquely, a base is formed integrally with the needle shaft between the needle bar and the bending part, and the base is provided with a surface that seats on the seat of the needle bar. This is desirable.

[Example] The present invention will be explained based on embodiments shown in the drawings.

Although the embodiment shown in FIG. 1 relates to a compound needle, it can be applied to other types of needles as well, such as chi-two needles.

As shown in FIG. 1, the needle shaft 2 of the compound needle 1 is milled with a groove 3 for a slider (not shown). One end of the needle shaft 2 becomes a needle head 4, and the other end reaches a base 6 via a bent portion 5. The bending portion 5 is seated on the seat 8 of the needle bar 9 on the needle bar side surface. This seating surface and catch extend in a direction substantially perpendicular to the direction of movement of the needles 1 during knitting.

Therefore, the force acting on the needle shaft 2 is conveniently received by the seat 8 of the needle bar 9.

The base portion 6 of the needle shaft is separately attached to each groove of the needle bar 9 via a stopper 10, as in the conventional case.

The embodiment shown in FIG. 2 is also a compound needle 1, but the bent portion 11 is bent obliquely. The other parts are the same as those of the embodiment shown in FIG.

As shown in FIG. 2, the refracting part 11 has a triangular base part 7 on the side far from the groove 3. The base part 7 is formed integrally with the refracting part 11, and its seating surface is perpendicular to the needle axis 2. It extends and is seated on a seat 8 of a needle bar 9 extending in the same direction. In this way, the catch 8 is substantially perpendicular to the direction of movement of the needle during knitting. Moreover, the base 7 provides good stability to the needle 1. For example, a stitch sliding on the needle shaft 2 exerts tension on the needle shaft 2 in a direction away from the groove 3, but it is supported by the seat 8. Since the bent base portion 7 resists the bending of the needle shaft 2, there is no risk that the needle shaft 2 will be bent by the stitches. This improvement in stability is the same in the embodiment shown in FIG.

[Brief explanation of the drawing]

FIG. 1 is an elevational view of a needle bar equipped with a needle whose needle axis is bent at a right angle. FIG. 2 is an elevational view of a needle bar equipped with a needle whose needle shaft is obliquely bent. In the figure, 1 is a needle, 2 is a needle shaft, 3 is a groove, 4 is a needle head, 5 is a bent part, 6 is a base, 7 is a base part, 8 is a seat, 9 is a needle bar, 10 is a stopper, 11 is a bending section. Applicant Liba Maschinenfabrik GmbH Warm Procedural Amendment April 8, 1986

Claims (1)

[Claims] 1) A needle comprising a bent needle shaft, a base portion of the needle shaft attached to a needle bar by a groove and a stopper, and a bent portion of the needle shaft supported by the needle bar. A needle bar for a sewing and knitting machine, wherein the base (6) of the needle shaft is attached to a groove of the needle bar (9), and the bent part (5) is attached to a seat of the needle bar (9). (8) A needle bar for a warp knitting machine, characterized in that the needle bar is supported on one surface extending substantially perpendicularly to the direction of movement of the needle (1) during knitting. 2) A stand (7) is provided between the needle bending part (11) consisting of an obliquely bent needle shaft and the needle bar (9), and the stand (7) is formed integrally with the needle shaft. The needle bar for a warp knitting machine according to claim 1, characterized in that the needle bar is supported by a seat (8) of the needle bar (9).